Target Size and Luminance in Apparent Brightness of the Peripheral Visual Field
- 1 August 1975
- journal article
- research article
- Published by SAGE Publications in Perceptual and Motor Skills
- Vol. 41 (1) , 49-50
- https://doi.org/10.2466/pms.1975.41.1.49
Abstract
Four target sizes between 15 and 120 min. of arc with six luminance levels covering the range between 398.1 and 1.26 cd/m2 in steps of .5 log units were presented to 0, 20, 40, 60, and 80° nasal retinal loci. In both peripheral and foveal viewing, magnitude estimates to apparent brightness judged by 12 Ss changed as a function of target size and luminance. The exponent of the power function was not dependent on retinal loci but on target size. However, when target size increased, the apparent brightness was slightly greater with peripheral viewing than with foveal viewing.Keywords
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